Data_Sheet_1_Holocene wildfire and vegetation dynamics in Central Yakutia, Siberia, reconstructed from lake-sediment proxies.pdf
Wildfires play an essential role in the ecology of boreal forests. In eastern Siberia, fire activity has been increasing in recent years, challenging the livelihoods of local communities. Intensifying fire regimes also increase disturbance pressure on the boreal forests, which currently protect the...
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Online Access: | https://doi.org/10.3389/fevo.2022.962906.s001 https://figshare.com/articles/dataset/Data_Sheet_1_Holocene_wildfire_and_vegetation_dynamics_in_Central_Yakutia_Siberia_reconstructed_from_lake-sediment_proxies_pdf/20494431 |
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ftfrontimediafig:oai:figshare.com:article/20494431 2024-09-15T18:30:14+00:00 Data_Sheet_1_Holocene wildfire and vegetation dynamics in Central Yakutia, Siberia, reconstructed from lake-sediment proxies.pdf Ramesh Glückler Rongwei Geng Lennart Grimm Izabella Baisheva Ulrike Herzschuh Kathleen R. Stoof-Leichsenring Stefan Kruse Andrei Andreev Luidmila Pestryakova Elisabeth Dietze 2022-08-16T04:57:56Z https://doi.org/10.3389/fevo.2022.962906.s001 https://figshare.com/articles/dataset/Data_Sheet_1_Holocene_wildfire_and_vegetation_dynamics_in_Central_Yakutia_Siberia_reconstructed_from_lake-sediment_proxies_pdf/20494431 unknown doi:10.3389/fevo.2022.962906.s001 https://figshare.com/articles/dataset/Data_Sheet_1_Holocene_wildfire_and_vegetation_dynamics_in_Central_Yakutia_Siberia_reconstructed_from_lake-sediment_proxies_pdf/20494431 CC BY 4.0 Evolutionary Biology Ecology Invasive Species Ecology Landscape Ecology Conservation and Biodiversity Behavioural Ecology Community Ecology (excl. Invasive Species Ecology) Ecological Physiology Freshwater Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Population Ecology Terrestrial Ecology fire larch boreal forest Russia charcoal pollen ancient DNA Dataset 2022 ftfrontimediafig https://doi.org/10.3389/fevo.2022.962906.s001 2024-08-19T06:19:48Z Wildfires play an essential role in the ecology of boreal forests. In eastern Siberia, fire activity has been increasing in recent years, challenging the livelihoods of local communities. Intensifying fire regimes also increase disturbance pressure on the boreal forests, which currently protect the permafrost beneath from accelerated degradation. However, long-term relationships between changes in fire regime and forest structure remain largely unknown. We assess past fire-vegetation feedbacks using sedimentary proxy records from Lake Satagay, Central Yakutia, Siberia, covering the past c. 10,800 years. Results from macroscopic and microscopic charcoal analyses indicate high amounts of burnt biomass during the Early Holocene, and that the present-day, low-severity surface fire regime has been in place since c. 4,500 years before present. A pollen-based quantitative reconstruction of vegetation cover and a terrestrial plant record based on sedimentary ancient DNA metabarcoding suggest a pronounced shift in forest structure toward the Late Holocene. Whereas the Early Holocene was characterized by postglacial open larch-birch woodlands, forest structure changed toward the modern, mixed larch-dominated closed-canopy forest during the Mid-Holocene. We propose a potential relationship between open woodlands and high amounts of burnt biomass, as well as a mediating effect of dense larch forest on the climate-driven intensification of fire regimes. Considering the anticipated increase in forest disturbances (droughts, insect invasions, and wildfires), higher tree mortality may force the modern state of the forest to shift toward an open woodland state comparable to the Early Holocene. Such a shift in forest structure may result in a positive feedback on currently intensifying wildfires. These new long-term data improve our understanding of millennial-scale fire regime changes and their relationships to changes of vegetation in Central Yakutia, where the local population is already being confronted with intensifying ... Dataset permafrost Yakutia Siberia Frontiers: Figshare |
institution |
Open Polar |
collection |
Frontiers: Figshare |
op_collection_id |
ftfrontimediafig |
language |
unknown |
topic |
Evolutionary Biology Ecology Invasive Species Ecology Landscape Ecology Conservation and Biodiversity Behavioural Ecology Community Ecology (excl. Invasive Species Ecology) Ecological Physiology Freshwater Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Population Ecology Terrestrial Ecology fire larch boreal forest Russia charcoal pollen ancient DNA |
spellingShingle |
Evolutionary Biology Ecology Invasive Species Ecology Landscape Ecology Conservation and Biodiversity Behavioural Ecology Community Ecology (excl. Invasive Species Ecology) Ecological Physiology Freshwater Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Population Ecology Terrestrial Ecology fire larch boreal forest Russia charcoal pollen ancient DNA Ramesh Glückler Rongwei Geng Lennart Grimm Izabella Baisheva Ulrike Herzschuh Kathleen R. Stoof-Leichsenring Stefan Kruse Andrei Andreev Luidmila Pestryakova Elisabeth Dietze Data_Sheet_1_Holocene wildfire and vegetation dynamics in Central Yakutia, Siberia, reconstructed from lake-sediment proxies.pdf |
topic_facet |
Evolutionary Biology Ecology Invasive Species Ecology Landscape Ecology Conservation and Biodiversity Behavioural Ecology Community Ecology (excl. Invasive Species Ecology) Ecological Physiology Freshwater Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Population Ecology Terrestrial Ecology fire larch boreal forest Russia charcoal pollen ancient DNA |
description |
Wildfires play an essential role in the ecology of boreal forests. In eastern Siberia, fire activity has been increasing in recent years, challenging the livelihoods of local communities. Intensifying fire regimes also increase disturbance pressure on the boreal forests, which currently protect the permafrost beneath from accelerated degradation. However, long-term relationships between changes in fire regime and forest structure remain largely unknown. We assess past fire-vegetation feedbacks using sedimentary proxy records from Lake Satagay, Central Yakutia, Siberia, covering the past c. 10,800 years. Results from macroscopic and microscopic charcoal analyses indicate high amounts of burnt biomass during the Early Holocene, and that the present-day, low-severity surface fire regime has been in place since c. 4,500 years before present. A pollen-based quantitative reconstruction of vegetation cover and a terrestrial plant record based on sedimentary ancient DNA metabarcoding suggest a pronounced shift in forest structure toward the Late Holocene. Whereas the Early Holocene was characterized by postglacial open larch-birch woodlands, forest structure changed toward the modern, mixed larch-dominated closed-canopy forest during the Mid-Holocene. We propose a potential relationship between open woodlands and high amounts of burnt biomass, as well as a mediating effect of dense larch forest on the climate-driven intensification of fire regimes. Considering the anticipated increase in forest disturbances (droughts, insect invasions, and wildfires), higher tree mortality may force the modern state of the forest to shift toward an open woodland state comparable to the Early Holocene. Such a shift in forest structure may result in a positive feedback on currently intensifying wildfires. These new long-term data improve our understanding of millennial-scale fire regime changes and their relationships to changes of vegetation in Central Yakutia, where the local population is already being confronted with intensifying ... |
format |
Dataset |
author |
Ramesh Glückler Rongwei Geng Lennart Grimm Izabella Baisheva Ulrike Herzschuh Kathleen R. Stoof-Leichsenring Stefan Kruse Andrei Andreev Luidmila Pestryakova Elisabeth Dietze |
author_facet |
Ramesh Glückler Rongwei Geng Lennart Grimm Izabella Baisheva Ulrike Herzschuh Kathleen R. Stoof-Leichsenring Stefan Kruse Andrei Andreev Luidmila Pestryakova Elisabeth Dietze |
author_sort |
Ramesh Glückler |
title |
Data_Sheet_1_Holocene wildfire and vegetation dynamics in Central Yakutia, Siberia, reconstructed from lake-sediment proxies.pdf |
title_short |
Data_Sheet_1_Holocene wildfire and vegetation dynamics in Central Yakutia, Siberia, reconstructed from lake-sediment proxies.pdf |
title_full |
Data_Sheet_1_Holocene wildfire and vegetation dynamics in Central Yakutia, Siberia, reconstructed from lake-sediment proxies.pdf |
title_fullStr |
Data_Sheet_1_Holocene wildfire and vegetation dynamics in Central Yakutia, Siberia, reconstructed from lake-sediment proxies.pdf |
title_full_unstemmed |
Data_Sheet_1_Holocene wildfire and vegetation dynamics in Central Yakutia, Siberia, reconstructed from lake-sediment proxies.pdf |
title_sort |
data_sheet_1_holocene wildfire and vegetation dynamics in central yakutia, siberia, reconstructed from lake-sediment proxies.pdf |
publishDate |
2022 |
url |
https://doi.org/10.3389/fevo.2022.962906.s001 https://figshare.com/articles/dataset/Data_Sheet_1_Holocene_wildfire_and_vegetation_dynamics_in_Central_Yakutia_Siberia_reconstructed_from_lake-sediment_proxies_pdf/20494431 |
genre |
permafrost Yakutia Siberia |
genre_facet |
permafrost Yakutia Siberia |
op_relation |
doi:10.3389/fevo.2022.962906.s001 https://figshare.com/articles/dataset/Data_Sheet_1_Holocene_wildfire_and_vegetation_dynamics_in_Central_Yakutia_Siberia_reconstructed_from_lake-sediment_proxies_pdf/20494431 |
op_rights |
CC BY 4.0 |
op_doi |
https://doi.org/10.3389/fevo.2022.962906.s001 |
_version_ |
1810471701290418176 |